Journal of Food, Agriculture and Environment

Behaviour of cadmium derived from sewage effluent irrigation and impact on tomato growth depend on soil physicochemical characteristics

Author(s):

Omar Khodjet Kesba ^1*, Leila Souad Bahbouh ², Samir Yahiaoui ²

Recieved Date: 2010-06-12, Accepted Date: 2010-10-18

Abstract:

The shortage of water resources in Algeria requires inevitably the recourse to the re-use of water in agriculture. However, this water can contain various pollutants, in particular heavy metals. Some of these elements generate rather frightening incidence on the environment and even on the health of the alive beings. Their movement and their mobility are closely related to the physical and physicochemical characteristics of the environment. The aim of present investigation was to study the influence of physicochemical characteristics of an irrigated soil on the behaviour of cadmium and its impact on the development and growth of tomato. Experimental device comprised eleven PVC columns of 1 m height and 40 cm diameter. filled with soil on height of 70 cm. Organic matter was added to columns No. 7-10. The columns No. 1, 6, 7 and 11 were irrigated with sewage effluent, the columns No. 2, 4, 5, 8, 9 and 10 with sewage effluent including Cd²⁺ 0.8 mg/l and the column No. 3 was irrigated with tap water. Drainage water was collected in basins under the columns. Tomato plants were growing in the columns No. 1, 2, 7 and 8. During growth observations were done on surfaces of the leaves, length and thickness of stems, number of flowers and fruits and possible symptoms of diseases. Adsorption of cadmium was more remarkable in soils containing organic matter, and organic matter contributed to increase of tomato growth and yield. The use of raw sewage effluent has an influence on the physical and physico-hydrous parameters of the soil, which themselves will have a direct influence on the quality and the quantity of trace metals retained by these soils.

Keywords:

Heavy metals, cadmium, development, growth, tomato, sewage effluents

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Journal: Journal of Food, Agriculture and Environment
Year: 2010
Volume: 8
Issue: 3&4
Category: Environment
Pages: 1305-1312

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